HD6432345 Datasheet, PDF (254/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

8.6 Port A
8.6.1 Overview
Port A is an 4-bit I/O port. Port A pins also function as address bus outputs. The pin functions
change according to the operating mode.
Port A has a built-in MOS input pull-up function that can be controlled by software.
Figure 8.5 shows the port A pin configuration.
Port A
Port A pins
PA₃/ A₁₉
PA₂/ A₁₈
PA₁/ A₁₇
PA₀/ A₁₆
Pin functions in modes 1, 2, 3, and 7*
PA₃ (I/O)
PA₂ (I/O)
PA₁ (I/O)
PA₀ (I/O)
Pin functions in modes 4 and 5
Pin functions in mode 6*
A₁₉ (output)
A₁₈ (output)
A₁₇ (output)
A₁₆ (output)
PA₃ (input)/A₁₉ (output)
PA₂ (input)/A₁₈ (output)
PA₁ (input)/A₁₇ (output)
PA₀ (input)/A₁₆ (output)
Note: * Modes 1 to 3 are not available on the F-ZTAT version.
Modes 2, 3, 6, and 7 are not available on the ROMless version.
Figure 8.5 Port A Pin Functions
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